contrib/pgcrypto/px-crypt.h

   1 /*
   2  * px-crypt.h
   3  *              Header file for px_crypt().
   4  *
   5  * Copyright (c) 2001 Marko Kreen
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *        notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *        notice, this list of conditions and the following disclaimer in the
  15  *        documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.      IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * $PostgreSQL$
  30  */
  31
  32 #ifndef _PX_CRYPT_H
  33 #define _PX_CRYPT_H
  34
  35 /* max room for result */
  36 #define PX_MAX_CRYPT  128
  37
  38 /* max salt returned by gen_salt() */
  39 #define PX_MAX_SALT_LEN         128
  40
  41 /* default rounds for xdes salt */
  42 /* NetBSD bin/passwd/local_passwd.c has (29 * 25)*/
  43 #define PX_XDES_ROUNDS          (29 * 25)
  44
  45 /* default for blowfish salt */
  46 #define PX_BF_ROUNDS            6
  47
  48 /*
  49  * main interface
  50  */
  51 char       *px_crypt(const char *psw, const char *salt, char *buf, unsigned buflen);
  52 int                     px_gen_salt(const char *salt_type, char *dst, int rounds);
  53
  54 /*
  55  * internal functions
  56  */
  57
  58 /* crypt-gensalt.c */
  59 char *_crypt_gensalt_traditional_rn(unsigned long count,
  60                                  const char *input, int size, char *output, int output_size);
  61 char *_crypt_gensalt_extended_rn(unsigned long count,
  62                                  const char *input, int size, char *output, int output_size);
  63 char *_crypt_gensalt_md5_rn(unsigned long count,
  64                                  const char *input, int size, char *output, int output_size);
  65 char *_crypt_gensalt_blowfish_rn(unsigned long count,
  66                                  const char *input, int size, char *output, int output_size);
  67
  68 /* disable 'extended DES crypt' */
  69 /* #define DISABLE_XDES */
  70
  71 /* crypt-blowfish.c */
  72 char *_crypt_blowfish_rn(const char *key, const char *setting,
  73                                    char *output, int size);
  74
  75 /* crypt-des.c */
  76 char       *px_crypt_des(const char *key, const char *setting);
  77
  78 /* crypt-md5.c */
  79 char *px_crypt_md5(const char *pw, const char *salt,
  80                          char *dst, unsigned dstlen);
  81
  82 #endif   /* _PX_CRYPT_H */